Water faucet control cartridge

Abstract

An improved structure for a water faucet control cartridge including an eccentrically arranged valve at the lower extent of the flow guide disk. The eccentrically arranged valve is of plastic construction and has an internal offset flow passage that enables water to flow from the water output seat of the faucet to the flow guide disk. The valve has a flat, semicircular, top surface for sealing against the flow disk.

What is claimed is:  
     
       1. An improved water faucet control cartridge comprising; 
       a rotary control stem that is situated at the center of a cartridge body and installed below the handle of a water faucet;  
       a sealing disk that is fitted to the bottom end of the rotary control stem and for rotating synchronously with the rotary control stem;  
       a flow guide disk that is positioned under the sealing disk and has an outer circumference that fits into a water output seat of the water faucet;  
       an eccentrically arranged valve for varying the water flow path assembled to the bottom end of the said flow guide disk, said valve having a flat, substantially semicircular, top surface for sealing against a portion of a bottom surface of the flow guide disk;  
       the eccentrically arranged valve having a plastic construction an internal offset flow passage, wherein an upper extent of the said offset flow passage is contiguous with a flow guide hole in the flow guide disk and a lower extent of the offset flow passage is continuous with a washer in the faucet water supply pipe seat; and  
       whereby when the user rotates the handle, the rotary control stem is driven into rotation along with the sealing disk causing the water outlet hole and the water outlet edge of the sealing disk at the bottom end of the cartridge body to become aligned and also causing the alignment of the water outlet edge of the sealing disk with the flow guide hole, thereby allowing water to flow from the output opening of the water supply pipe seat through the eccentrically arranged valve and the sealing disk, after which the water flows through and emerges from the water outlet hole of the cartridge body.  
     
     
       2. The improved water faucet control cartridge recited in claim  1  wherein said flow guide includes two locking tabs extending outward from opposite edges thereof for engaging with corresponding slots in said water output seat. 
     
     
       3. The improved water faucet control cartridge recited in claim  1  wherein said top surface of the valve further includes a substantially semicircular opening in communication with said offset flow passage. 
     
     
       4. The improved water faucet control cartridge recited in claim  2  wherein said top surface of the valve further includes a substantially semicircular opening in communication with said offset flow passage. 
     
     
       5. The improved water faucet control cartridge recited in claim  4  wherein said control stem includes a single tang for engaging a slot in a top surface of the sealing disk. 
     
     
       6. The improved water faucet control cartridge recited in claim  5  wherein said sealing disk is truncated on opposite side edges. 
     
     
       7. The improved water faucet control cartridge recited in claim  6  wherein said sealing disk and flow guide are formed from a ceramic material.